Dresden 2026 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 1: Electron Accelerators and Sources I

AKBP 1.3: Talk

Monday, March 9, 2026, 10:30–10:45, SCH/A117

Simultaneous Beam Extraction at ELSA — •Max Ammann, Klaus Desch, Dennis Proft, Michael Switka, and Leonardo Thome — Physikalisches Institut der Universität Bonn

At the electron accelerator facility ELSA, electrons with energies up to 3.2 GeV are extracted to multiple experimental stations at two distinct beamlines via slow resonant extraction, serving hadron-physics experiments, detector tests, and medical research. In the past, only one beamline could be served at a time. A new machine-operation mode has been developed that enables extraction to one of the hadron-physics experiments and, simultaneously, to the detector test beamline, where typically lower electron rates are required. This allows more efficient use of the available beam time. The properties and underlying beam dynamics of this machine mode are presented, along with sophisticated methods for rate control at the second beamline.

Keywords: Resonant Extraction